Knee pad



FIG. 1 is a front perspective view of a knee pad showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is rear elevational view thereof.

The broken lines in all views represents conventional stitching. 

The ornamental design for a knee pad, as shown and described. 